Slow-release scale inhibiting compositions
US10865339B2 · kind B2 · utility
2Cited by
100References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2017 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | May 12, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coated particulate composition includes a vitreous polyphosphate glass particulate and a coating on at least a portion of the surface of the particulate, the coating comprising a water-insoluble polymer or a water-insoluble particulate, wherein the coating weight is about 0.01 wt % to 90 wt % of the mass of the coated particulate. The particulates provide long-term scale inhibition downhole in subterranean reservoirs where temperatures exceed 70° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.